Call of Duty is a first-person shooter video game franchise. The series began on Microsoft Windows, and later expanded to consoles and handhelds. Several spin-off games have been released. The earlier games in the series are set primarily in World War II, but later games like Call of Duty 4 Modern Warfare are set in modern times or in futuristic settings. The most recently announced game, Call of Duty: WWII, was released on November 3, 2017 and return the series to its mid-20th century roots.

The Call of Duty games are published and owned by Activision. While Infinity Ward is still a developer, Treyarch and Sledgehammer Games also develop several of the titles with the release of the studios' games alternating with each other.